{"product_id":"5-05mm-mini-brass-drill-chuck-shaft-adapter-cnc-spindle-motors-dc","title":"Mini Brass Drill Chuck Shaft Adapter – 5.05mm for CNC Spindle Motors \u0026 High-Torque DC Motors","description":"\u003cstyle\u003e\na {\n  text-decoration: none;\n  color: inherit;\n  transition: all 0.3s ease;\n}\na:hover {\n  text-decoration: underline;\n}\n@media only screen and (max-width: 768px) {\n  body { font-size: 16px; line-height: 1.6; padding: 0 10px; }\n  a { word-break: break-word; font-size: 16px; }\n  img { max-width: 100%; height: auto; }\n  table { width: 100%; display: block; overflow-x: auto; }\n}\n\u003c\/style\u003e\n\u003cp\u003eThe \u003cstrong\u003eMini Brass Drill Chuck Shaft Adapter – 5.05 mm\u003c\/strong\u003e is designed for larger CNC spindle motors and high-torque DC hobby motors with a \u003cstrong\u003e5.05 mm shaft diameter\u003c\/strong\u003e. Precision-machined brass body delivers a secure, wobble-free connection between your motor shaft and collet chuck — suitable for router spindles, desktop engraving machines, and heavy-duty DIY CNC builds requiring a reliable, low-runout chuck interface.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003ch4\u003e\u003cstrong\u003ePrecision-Machined Brass Construction\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eSolid Brass Body\u003c\/strong\u003e: Machined to tight tolerances for a secure, wobble-free fit between your 5.05 mm motor shaft and collet chuck — minimizing runout and vibration at operating RPM.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eKnurled Grip Surface\u003c\/strong\u003e: Textured exterior for positive hand-tightening and secure seating during chuck installation and removal.\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003e5.05 mm Shaft Fit\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003eFits \u003cstrong\u003eCNC spindle motors\u003c\/strong\u003e and \u003cstrong\u003ehigh-torque DC hobby motors\u003c\/strong\u003e with 5.05 mm shafts — common in desktop router spindles, engraving machines, and heavy-duty DIY CNC builds.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eOutput bore: \u003cstrong\u003e3.17 mm (1\/8\")\u003c\/strong\u003e — compatible with our Mini Brass Collet Chuck and most third-party mini brass chucks accepting a standard 1\/8\" input bore.\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eUniversal Chuck Compatibility\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003eDesigned to pair directly with our \u003cstrong\u003eMini Brass Collet Chuck\u003c\/strong\u003e (3.17 mm bore) — sold separately or as part of the \u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/machine-accessories\" rel=\"noreferrer\" target=\"_blank\"\u003eFull Collet Chuck Set\u003c\/a\u003e.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eAlso compatible with most third-party mini brass chucks accepting a standard 3.17 mm (1\/8\") input bore.\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003ch4\u003e\u003cstrong\u003eCNC Router \u0026amp; Engraving Machines\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eRouter Spindle Chucks\u003c\/strong\u003e: Attach a collet chuck to high-torque CNC spindle motors for improved tool grip on routing bits and engraving tools in desktop CNC builds.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eDesktop Engraving\u003c\/strong\u003e: Secure, low-runout chuck interface for engraving machines using larger DC motors with 5.05 mm shafts.\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eLapidary \u0026amp; Glass Finishing\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eHigh-Torque Motor Setups\u003c\/strong\u003e: Pairs with larger DC motors for demanding \u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/lapidary-grinding-polishing\" rel=\"noreferrer\" target=\"_blank\"\u003elapidary grinding\u003c\/a\u003e and \u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/glass-grinding-finishing\" rel=\"noreferrer\" target=\"_blank\"\u003eglass carving\u003c\/a\u003e applications where higher torque is required.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003ePrecision Drilling in Hard Materials\u003c\/strong\u003e: Pair with \u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-wire-hollow-drill-bits\" rel=\"noreferrer\" target=\"_blank\"\u003ediamond hollow drill bits\u003c\/a\u003e for clean, chip-free holes in gemstones, glass, and ceramic.\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eJewelry Making \u0026amp; Bench Work\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eHigh-Torque Motor Integration\u003c\/strong\u003e: Connects 5.05 mm shaft motors to collet chucks for use with carbide burs and engraving bits in \u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/jewelry-making-tools\" rel=\"noreferrer\" target=\"_blank\"\u003ejewelry fabrication\u003c\/a\u003e and metalwork.\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShaft Bore (Input)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.05 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChuck Bore (Output)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.17 mm (1\/8\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSolid Brass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Motor Types\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCNC spindle motors, high-torque DC hobby motors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCNC router spindles, engraving machines, lapidary, jewelry, glass finishing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e\u003cstrong\u003eComparison: Shaft Adapter vs. Full Chuck Set\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eShaft Adapter (This Listing)\u003c\/th\u003e\n\u003cth\u003eFull Collet Chuck Set\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eContents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 × 5.05 mm shaft adapter\u003c\/td\u003e\n\u003ctd\u003eChuck body + 11 collets + 1 adapter + hex key\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBest For\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eReplacing or adding a 5.05 mm adapter to an existing chuck\u003c\/td\u003e\n\u003ctd\u003eComplete micro-drilling solution from scratch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChuck Required\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes — sold separately\u003c\/td\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003ePress the 5.05 mm adapter firmly onto your motor shaft.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eThread or press the collet chuck body onto the adapter’s output end (3.17 mm bore).\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eInsert the appropriate collet, load your drill bit or bur shank, and tighten with the hex key before operating.\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBest Practices\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003eVerify your motor shaft diameter with calipers before ordering — nominal sizes (e.g. “5 mm”) may vary slightly by manufacturer.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eEnsure the adapter is fully seated and secure before operating at high RPM to prevent runout or chuck wobble.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eWhen drilling hard materials such as stone or glass, pair with \u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-wire-hollow-drill-bits\" rel=\"noreferrer\" target=\"_blank\"\u003ediamond-coated drill bits\u003c\/a\u003e and use water as a coolant to extend bit life.\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatible Collet Sizes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis adapter is compatible with the following collet sizes when used with our Mini Brass Collet Chuck:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eCollet Size\u003c\/th\u003e\n\u003cth\u003eClamping Range\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e0.5 mm\u003c\/td\u003e\n\u003ctd\u003e0.2 – 0.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0.8 mm\u003c\/td\u003e\n\u003ctd\u003e0.3 – 0.9 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.0 mm\u003c\/td\u003e\n\u003ctd\u003e0.7 – 1.1 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.2 mm\u003c\/td\u003e\n\u003ctd\u003e0.8 – 1.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.6 mm\u003c\/td\u003e\n\u003ctd\u003e1.3 – 1.7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.8 mm\u003c\/td\u003e\n\u003ctd\u003e1.4 – 1.9 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.0 mm\u003c\/td\u003e\n\u003ctd\u003e1.8 – 2.1 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.4 mm\u003c\/td\u003e\n\u003ctd\u003e2.1 – 2.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3.0 mm\u003c\/td\u003e\n\u003ctd\u003e2.5 – 3.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3.2 mm\u003c\/td\u003e\n\u003ctd\u003e2.8 – 3.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRelated Tools\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/machine-accessories\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003cstrong\u003eMini Brass Collet Chuck Set\u003c\/strong\u003e\u003c\/a\u003e — The matching chuck body and collet set for use with this adapter.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-wire-hollow-drill-bits\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003cstrong\u003eDiamond Wire Hollow Drill Bits\u003c\/strong\u003e\u003c\/a\u003e — Ideal for drilling gemstones, glass, and ceramic with your chuck setup.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/sintered-diamond-core-drills\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003cstrong\u003eSintered Diamond Core Drills\u003c\/strong\u003e\u003c\/a\u003e — For larger bore drilling in hard stone and glass with superior longevity.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/machine-accessories\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003cstrong\u003eMachine Accessories\u003c\/strong\u003e\u003c\/a\u003e — Full range of shaft adapters, backing plates, and motor accessories.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/jewelry-making-tools\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003cstrong\u003eJewelry Making Tools\u003c\/strong\u003e\u003c\/a\u003e — Burs, mandrels, and precision tools for bench jewelers and stone setters.\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWhy Choose This Shaft Adapter?\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003ePrecision Fit\u003c\/strong\u003e: Machined to tight tolerances for a secure, low-runout connection between your 5.05 mm motor shaft and collet chuck.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eHigh-Torque Motor Coverage\u003c\/strong\u003e: Covers the larger CNC spindle and high-torque hobby motor shaft diameter — ideal for demanding routing and engraving applications.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eImmediate Upgrade\u003c\/strong\u003e: Extend the utility of your existing collet chuck to a 5.05 mm motor platform without sourcing custom parts.\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eIdeal For\u003c\/strong\u003e: DIY CNC builders, desktop engraving enthusiasts, \u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/lapidary-grinding-polishing\" rel=\"noreferrer\" target=\"_blank\"\u003elapidary artists\u003c\/a\u003e, \u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/jewelry-making-tools\" rel=\"noreferrer\" target=\"_blank\"\u003ejewelry makers\u003c\/a\u003e, and makers upgrading or expanding their precision drilling setup with high-torque motors.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eExplore our full range of \u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/machine-accessories\" rel=\"noreferrer\" target=\"_blank\"\u003emachine accessories\u003c\/a\u003e and \u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-wire-hollow-drill-bits\" rel=\"noreferrer\" target=\"_blank\"\u003ediamond drill bits\u003c\/a\u003e to complete your precision drilling setup. For bulk orders or custom configurations, contact our team for tailored solutions.\u003c\/strong\u003e\u003c\/p\u003e","brand":"flexiblediamondabrasive","offers":[{"title":"Default Title","offer_id":53379785294008,"sku":null,"price":8.55,"currency_code":"USD","in_stock":true}],"url":"https:\/\/lapidarygrinder.com\/en-mx\/products\/5-05mm-mini-brass-drill-chuck-shaft-adapter-cnc-spindle-motors-dc","provider":"hanslapidarytool","version":"1.0","type":"link"}